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Finding the Fourth Proportional to 495.70, 743.28 and 264.45

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Solution

The fourth proportional to 495.70, 743.28 and 264.45 is: 396.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.70 : 743.28 = 264.45 : x
  2. Step 2: Convert to fraction form
    495.70/743.28 = 264.45/x
  3. Step 3: Cross multiply
    495.70x = 743.28 × 264.45
  4. Step 4: Simplify right side
    495.70x = 196,560.40
  5. Step 5: Solve for x
    x = 196,560.40/495.70
  6. Step 6: Final answer
    x = 396.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.